Coupling annealing-capable high-coherence flux qubits

ORAL

Abstract

Despite progress in quantum annealing algorithms and hardware development, key questions remain regarding the role of quantum coherence, entanglement, etc., on key figures of merit needed for real world applications. In this talk we will discuss results of small scale annealing experiments with high-coherence superconducting flux qubits as a part of the Quantum Enhanced Optimization program, which seeks to understand and address these issues. Using systems of two and three fully-connected qubits, we demonstrate controllable, scalable couplings between the Z-like fields of individual qubits. We will discuss the impact of coupling on the coherence of the system as it relates to both multi-qubit measurement fidelity as well as the potential importance as a source of error during computation.

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Presenters

  • Steven Disseler

    National Institute of Standards and Technology, Northrop Grumman - Mission Systems, Northrop Grumman

Authors

  • Steven Disseler

    National Institute of Standards and Technology, Northrop Grumman - Mission Systems, Northrop Grumman

  • James I. Basham

    Northrop Grumman - Mission Systems, Northrop Grumman

  • Jeffrey Grover

    Northrop Grumman - Mission Systems, Northrop Grumman

  • Sergey Novikov

    Northrop Grumman, Northrop Grumman - Mission Systems, Northrop Grumman Corporation - Mission Systems

  • David Ferguson

    Northrop Grumman, Northrop Grumman - Mission Systems, Northrop Grumman Corporation

  • Zachary A Stegen

    Northrop Grumman - Mission Systems, Northrop Grumman

  • Alexander Marakov

    Northrop Grumman - Mission Systems, Northrop Grumman

  • David K Kim

    MIT Lincoln Lab, Lincoln Laboratory, Massachusetts Institute of Technology, MIT Lincoln Laboratory, Massachusetts Institute of Technology, Massachusetts Institute of Technology Lincoln Laboratory, Lincoln Lab, Massachusetts Institute of Technology, USA, MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Alexander Melville

    MIT Lincoln Lab, MIT Lincoln Laboratory, Massachusetts Institute of Technology, Lincoln Laboratory, Massachusetts Institute of Technology, MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421, MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Bethany M Niedzielski

    Michigan State University, MIT Lincoln Laboratory, Lincoln Laboratory, Massachusetts Institute of Technology, MIT Lincoln Lab, Department of Physics, Massachusetts Institute of Technology, MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Jonilyn L Yoder

    MIT Lincoln Lab, Lincoln Laboratory, Massachusetts Institute of Technology, MIT Lincoln Laboratory, Massachusetts Institute of Technology, Massachusetts Institute of Technology Lincoln Laboratory, Lincoln Lab, Massachusetts Institute of Technology, USA, MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421, MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Robert Hinkey

    Northrop Grumman, Northrop Grumman - Mission Systems

  • Daniel A Lidar

    University of Southern California, Univ of Southern California

  • Kenneth M. Zick

    Northrop Grumman, Northrop Grumman - Mission Systems